Question

A 2 m $\times$ 4 m rectangular footing has to carry a uniformly distributed load of 120 kPa. as per the 2 : 1 dispersion method of stress distribution, the increment in vertical stress (kPa) at a depth of 2 m below the footing is

• A. 40

Answer 1

The correct option is A 40
Increment in the vertical stress

$=\frac{120\times 2\times 4}{(2+h)(4+h)}$

$=\frac{120\times 2\times 4}{(2+2)(4+2)}$

= 40 kPa